Kouroupis D, Churchman SM, English A, Emery P, Giannoudis PV, McGonagle D, Jones EA. Assessment of umbilical cord tissue as a source of mesenchymal stem cell/endothelial cell mixtures for bone regeneration.
Regen Med 2014;
8:569-81. [PMID:
23998751 DOI:
10.2217/rme.13.47]
[Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
AIM
To enumerate and characterize mesenchymal stem cells (MSCs) and endothelial cells (ECs) in umbilical cord (UC) tissue digests.
MATERIALS & METHODS
Cultured UC cells were characterized phenotypically, and functionally by using 48-gene arrays. Native MSCs and ECs were enumerated using flow cytometry.
RESULTS
Compared with bone marrow (BM) MSCs, UC MSCs displayed significantly lower (range 4-240-fold) basal levels of bone-related transcripts, but their phenotypes were similar (CD73⁺, CD105⁺, CD90⁺, CD45⁻ and CD31⁻). UC MSCs responded well to osteogenic induction, but day 21 postinduction levels remained below those achieved by BM MSCs. The total yield of native UC MSCs (CD90⁺, CD45⁻ and CD235α⁻) and ECs (CD31⁺, CD45⁻ and CD235α⁻) exceeded 150 and 15 million cells/donation, respectively. Both UC MSCs and ECs expressed CD146.
CONCLUSION
While BM MSCs are more predisposed to osteogenesis, UC tissue harbors large numbers of MSCs and ECs; such minimally manipulated 'off-the-shelf' cellular mixtures can be used for regenerating bone in patients with compromised vascular supply.
Collapse